Where does “lumberroom” come from?

lumberroom (English) comes from English room, from Middle English roum, from Old English rūm, from Proto-West Germanic rūm, from Proto-Germanic rūmaz, from Proto-Indo-European rewh₁- — free space.

lumberroom (English): A room in which lumber is stored

Definitions

  1. A room in which lumber is stored

Ancestry of “lumberroom”, step by step

lumberroom traces back through two separate lines of ancestry.

via English room

StepLanguageWordMeaning
1EnglishroomOpportunity or scope; Space "for" something, or...
2Middle EnglishroumA space or area; A room
3Old Englishrūmroom, space; roomy, spacious, ample, extensive,...
4Proto-West Germanicrūmroomy, spacious; room, open space
5Proto-Germanicrūmazroomy, spacious, open
6Proto-Indo-Europeanrewh₁-free space

via English lumber

StepLanguageWordMeaning
1EnglishlumberOld furniture or other items that take up room,...
Every word from Proto-Indo-European rewh₁-Every word from Proto-Germanic rūmazEvery word from Proto-West Germanic rūm